四川水力发电2026，Vol.45Issue(2)：130-135,6.DOI:10.20196/j.cnki.scslfd.20260227
颗粒细观参数空间变异性对致密土体劈裂注浆过程的影响研究
Effect of spatial variability of particle micro-parameters on the fracturing grouting process of dense soil
黄烨迪 1彭浩洋2
作者信息
- 1. 中国电建集团成都勘测设计研究院有限公司,四川 成都 611130
- 2. 雅砻江流域水电开发有限公司,四川 成都 610051
- 折叠
摘要
Abstract
Based on the random discrete element method of MATLAB and PFC2D,the random field model of in-tergranular contact normal bond strength was established by Karhunen-Loève(KL)expansion method.Ac-cording to the variation of soil porosity,the effect of spatial variability of contact normal bond strength on the grouting process of dense soil was studied.When the grouting pressure is 0.5 MPa,the variation of porosity and the cracking result in the two monitoring circles(r=1.0,r=2.0m)of the main influence range is shown.The results indicate that the variation of soil porosity of dense soil is closely related to the uncertainty of con-tact normal bond strength during splitting grouting.The spatial distribution of normal bond strength also cau-ses split cracks.The difference between the quantity and the formation time has almost no effect on the posi-tion at which the crack originated.关键词
劈裂注浆/离散元/空间变异性/随机场/接触法向黏结强度Key words
fracturing grouting/discrete element/spatial variability/random field/contact normal bond strength分类
建筑与水利引用本文复制引用
黄烨迪,彭浩洋..颗粒细观参数空间变异性对致密土体劈裂注浆过程的影响研究[J].四川水力发电,2026,45(2):130-135,6.
